<template>
    <div style="background-color: coral;">
        {{ message }}
        <button @click="greet()">问候</button>
    </div>
</template>
<script>
export default {
    data(){
        return{
            message:'hello,friend!'
        }
        
    },
    methods:{
        greet(){
            this.message='hello,'+this.$attrs.name+'!'

        }
    }
}
</script>